Tricopper(II)bis(2-((hydrogen phosphonato)methyl)benzylphosphonate) as a layered oxo-bridged copper(II) coordination polymer: Synthesis, structure, magnetic property, and catalytic activity

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Ay B., Takano R., Ishida T., Yıldız E.

POLYHEDRON, cilt.225, ss.1-7, 2022 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 225
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.poly.2022.116038
  • Dergi Adı: POLYHEDRON
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core
  • Sayfa Sayıları: ss.1-7
  • Çukurova Üniversitesi Adresli: Evet

Özet

A new copper diphosphonate framework with the formula [Cu3(C8H9O6P2)2]n has been synthesized using a trianion of (1,2-phenylenebis(methylene))bis(phosphonic acid) (H4L, C8H12O6P2) under hydrothermal conditions. The coordination polymer was fully characterized using elemental analysis, FTIR, ICP-OES, TG-FTIR and single crystal X-ray analysis. The X-ray crystallographic analysis shows that title compound forms a twodimensional coordination network in an ionic portion, giving an alternating organic/inorganic bilayer structure. From the analysis of magnetic susceptibility measurement between 1.8 and 100 K, relatively weak superexchange antiferromagnetic interactions were characterized, which is compatible with the geometries of the oxo-bridged Cu2+ ions. It can be used as an efficient catalyst for oxidation of thymol to thymoquinone. In addition, it shows high selectivity under the applied catalytic conditions and can be recycled at least three times without any significant degradation.